Home / 10,275.18-15,428.99-6,396.90

Finding the Fourth Proportional to 10,275.18, 15,428.99 and 6,396.90

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Solution

The fourth proportional to 10,275.18, 15,428.99 and 6,396.90 is: 9,605.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,275.18 : 15,428.99 = 6,396.90 : x
  2. Step 2: Convert to fraction form
    10,275.18/15,428.99 = 6,396.90/x
  3. Step 3: Cross multiply
    10,275.18x = 15,428.99 × 6,396.90
  4. Step 4: Simplify right side
    10,275.18x = 98,697,674.15
  5. Step 5: Solve for x
    x = 98,697,674.15/10,275.18
  6. Step 6: Final answer
    x = 9,605.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.